>4de3B (B:) observed residues (from ATOM records)
savqqklaalekssggrlgvalidtadntqvlyrgderfpmcstskvmaaaavlkqsetq
kqllnqpveikpadlvnynpiaekhvngtmtlaelsaaalqysdntamnkliaqlggpgg
vtafaraigdetfrldrteptlntaipgdprdtttpramaqtlrqltlghalgetqraql
vtwlkgnttgaasiraglptswtagdktgsgdygttndiaviwpqgraplvlvtyftqpq
qnaesrrdvlasaariiaegl